VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Thursday, January 1, 2026

Stock Comparison

PACCAR Inc vs Spirax Group plc

Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.

PACCAR Inc

PCAR · NASDAQ

Market cap (USD)$57.5B
SectorIndustrials
CountryUS
Data as of2026-01-01
Moat score
75/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

Full stock profile

Dive deeper into PACCAR Inc's moat claims, evidence, and risks.

View PCAR analysis

Spirax Group plc

SPX · London Stock Exchange

Market cap (USD)$6.7B
SectorIndustrials
CountryGB
Data as of2025-12-28
Moat score
71/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

Full stock profile

Dive deeper into Spirax Group plc's moat claims, evidence, and risks.

View SPX analysis

Comparison highlights

  • Moat score gap: PACCAR Inc leads (75 / 100 vs 71 / 100 for Spirax Group plc).
  • Segment focus: PACCAR Inc has 3 segments (73.8% in Truck); Spirax Group plc has 3 segments (52.1% in Steam Thermal Solutions).
  • Moat breadth: PACCAR Inc has 8 moat types across 3 domains; Spirax Group plc has 6 across 2.

Primary market context

PACCAR Inc

Truck

Market

Commercial truck OEM (heavy- and medium-duty)

Geography

Global (U.S./Canada and Europe primary)

Customer

Fleets, owner-operators, dealers

Role

OEM / manufacturer

Revenue share

73.8%

Spirax Group plc

Steam Thermal Solutions

Market

Industrial and commercial steam systems (condensate management, controls, thermal energy management products and solutions)

Geography

Global

Customer

Industrial process operators and commercial facility operators

Role

OEM / solutions provider

Revenue share

52.1%

Side-by-side metrics

PACCAR Inc
Spirax Group plc
Ticker / Exchange
PCAR - NASDAQ
SPX - London Stock Exchange
Market cap (USD)
$57.5B
$6.7B
Sector
Industrials
Industrials
HQ country
US
GB
Primary segment
Truck
Steam Thermal Solutions
Market structure
Oligopoly
Oligopoly
Market share
30%-31% (reported)
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
75 / 100
71 / 100
Moat domains
Demand, Supply, Financial
Supply, Demand
Last update
2026-01-01
2025-12-28

Moat coverage

Shared moat types

Brand TrustService Field NetworkCapex Knowhow ScaleInstalled Base Consumables

PACCAR Inc strengths

Physical Network DensityDistribution ControlCost Of Capital AdvantageCaptive finance integration

Spirax Group plc strengths

Design In QualificationSuite Bundling

Segment mix

PACCAR Inc segments

Full profile >

Truck

Oligopoly

73.8%

Parts

Competitive

19.8%

Financial Services

Competitive

6.2%

Spirax Group plc segments

Full profile >

Steam Thermal Solutions

Oligopoly

52.1%

Electric Thermal Solutions

Competitive

24.3%

Watson-Marlow Fluid Technology Solutions

Oligopoly

23.6%

Want the full wide moat stocks list?

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Curation & Accuracy

This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).

Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.